John Zarella left moderating Apollo astronauts share stories and landing on the moon.

With CNN correspondent John Zarella (left) moderating, Apollo astronauts (at the dais) Buzz Aldrin, Walt Cunningham, Edgar Mitchell, Al Worden, Charlie Duke, Vance Brand, Gerald Carr and Bruce McCandless share stories of their experiences during NASA's 40th Anniversary of Apollo Celebration of the July 1969 launch and landing on the moon. The ceremony was held in the Apollo/Saturn V Center at NASA's Kennedy Space Center in Florida. Photo credit: NASA/Kim Shiflett